chemistry calculators

Solve common chemistry problems with unit-aware steps.

Ideal Gas Law Calculator

Solve pressure, volume, amount, or temperature using PV = nRT.

Solve molarity, amount of solute, or solution volume.

Balance common chemical equations by conserving each element with exact integer coefficients.

Parse chemical formulas, hydrates and parentheses; show element contributions and convert between mass and moles.

Calculate pH, pOH, hydrogen and hydroxide concentrations from strong acid/base concentration with water autoionization.

Calculate zero-, first-, and second-order integrated rate laws or fit an order from concentration-time data.

Balance a reaction and convert one reactant or product amount into moles, mass, gas volume, or particles for every species.

Use Henderson–Hasselbalch for an acid/conjugate-base buffer, including strong acid/base addition and dilution.

Calculate pH at any titrant volume and generate a bounded titration curve for strong/strong and monoprotic weak/strong systems.

Identify the limiting reagent from all reactant amounts, calculate excess remaining, theoretical product and percent yield.